Talk show host David Letterman entertained Johnny Carson on the Tonight Show in August 1991, Letterman's first visit to the show after NBC announced that Jay Leno would be replacing Carson.
Talk show host David Letterman entertained Johnny Carson on the Tonight Show in August 1991, Letterman's first visit to the show after NBC announced that Jay Leno would be replacing Carson. ASSOCIATED PRESS
Talk show host David Letterman entertained Johnny Carson on the Tonight Show in August 1991, Letterman's first visit to the show after NBC announced that Jay Leno would be replacing Carson. ASSOCIATED PRESS

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